Wanting to upgrade my CPU Area 51

Any Intel X58 Express including a 990x CPU. intel-lga1366-motherboards Dell Alienware Aurora ALX Motherboard H869M 0H869M CN-0H869M MS-7591. Dell Motherboard raises the bar of PC Industry and deliver a full-value, high-performance solution for today's most demanding tasks. Manufacturer: Alienware Part number: H869M 0H869M CN-0H869M MS-7591 Dell Compatible Part number: Alienware Aurora ALX Specifications: Supported Processors: Intel Core i7 920 2.66GHz (8MB Cache) Quad Core Processor Intel Core i7 930 Quad Core Processor (2.8GHz, 8MB Cache) Intel Core i7 960 Quad Core Processor (3.2GHz, 8MB Cache) Intel Core i7 980x Extreme Six Core Processor (3.33GHz, 12MB Cache) Intel Core i7-970 Six Core Processor, 3.23GHz, 12MB Cache Supported Memory: Up to 24GB Tri-Channel DDR3 SDRAM at 1333Mhz - 6 DIMMS Up to 12GB Tri-Channel DDR3 SDRAM at 1600Mhz - 6 DIMMS Up to 6GB Tri-Channel DDR3 SDRAM at 1866Mhz - 3 DIMMS 6x 240-Pin DDR3 SDRAM Slots

990x CPU is the best one available for that platform.

An x51 is the small PC. Here is a video of it.